Property destruction and repression

I love the black bloc going out and smashing corporate windows. I think that corporations perpetrate violence...as part of doing business and I think...it's totally justifiable to go and destroy their property, to act violently towards their property as a way of...shaking them up and [provoking] fear in them. But what does that do? It justifies the security state and it allows them to be even more dominant and predatory.